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73 Magazine (Amateur Radio Today)

73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne Green. The magazine title, 73, means "best regards" in amateur radio lingo. Green, a former editor of CQ Amateur Radio magazine, published the first issue of 73 in October 1960.



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73 Magazine (Amateur Radio Today)
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73 Magazine February 1973 (#149) PC-IC-ID - For FM- RTTY- /M- etc ...... K2OAW 27 The Evolution of Spectrum Management - Radio Club of America Talk ...... W4BW 31 Phased Lock Loop Decoder - For continuous tone systems ...... WB6BIH 36 Toroidal Quadreture Antenna - New wideband antenna ...... W4KAE 40 Active Filter Applications - RTTY ...... W1SNN 45 Frequency Measuring System -II - Design theory and clock ...... K5DUS 49 Repeater Keying Line Control - Squelch tail and time-out ...... WB6BIH 60...
Topics: frequency, output, circuit, mhz, input, power, transistor, voltage, repeater, meter, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine April 1967 (#79) The Super Duper Super - It may not be a super, but it's sure super duper ...... WN1ECCH 6 A Toroidal VFO - An excellent VFO with many interesting mechanical features ...... W4BRS 10 Transceiver CW Filter and Monitor - Improve your transceiver's CW capability ...... WlDCG 14 Dreadful Ham Cliches - Special for April ...... K3SUK 16 The Converter Converter - Stick it between your UHF converter and your low-frequency receiver ...... W1OOP 18 The Ratnick Two'er - It's a...
Topics: khz, antenna, watts, power, ssb, circuit, ham, meter, receiver, amateur, power supply, watts pep,...
73 Magazine (Amateur Radio Today)
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73 Magazine September 1993 (#396) Computer Control for Beam Antennas, Part II - Give your station a smart, new twist ...... K4OND 10 The W2EKY "Icky-Stick" Antenna - Hit the roof with an improved ground-plane vertical ...... W2EKY 18 Compressing the W3EDP - Build this unique multiband restricted space antenna ...... G2BZQ 20 Distributed Capacity Twisted Loop - An indoor 40 meter antenna for five bucks ...... WA6QBU 26 Evolution of an Antenna - Build a new version of the classic...
Topics: radio, antenna, amateur, mhz, ham, repeater, frequency, amateur radio, radio today, ham radio,...
73 Magazine (Amateur Radio Today)
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73 Magazine November 2000 (#480) Build This IP3 Test Set - A receiver's third order input intercept point is more than just a mouthful ...... N2DCH 10 Inside Digital TV/VCR Tuners - Part 3: Data receiver for testing ...... W6WTU 16 A BFO for Your SW Rx - With a $10 Ten-Tec kit ...... W4PGI 22 Super-Simple 80m Fox - Build this easy and inexpensive QRP rig, perfect for dual-band foxboxes ...... K0OV 24 You Can Build the FoxFinder 80! - Here's how to get started in the exciting world of 3.5 MHz...
Topics: radio, receiver, antenna, amateur, ihe, signal, circuit, kit, khz, output, amateur radio, radio...
73 Magazine (Amateur Radio Today)
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73 Magazine April 1979 (#223) A Speedy Spinner Mod - 5,000,000 Hz per minute ...... W2RZJ 40 A Variable Bandpass Active Filter - extremely simple design ...... W3KBM 42 What About an Active Antenna? - here's a look at one ...... W5JJ 44 Help for the Hearing-Impaired - don't miss another phone call ...... W4VRV 56 Try a Bi-Loop Antenna - gets you coming and going ...... W7CJB 58 Simple RTTY IDer - uses five ICs ...... G3MEJ 60 Tales of Speech Processing - including a practical design .........
Topics: amateur, mhz, antenna, radio, power, frequency, kit, arrl, tion, amateur radio, power supply, toll...
73 Magazine (Amateur Radio Today)
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73 Magazine December 1991 (#375) The Simple TX TX - The perfect companion for the SupeRX receiver! ...... WA6IVC 10 Project INSPIRE: A Space Shuttle Experiment - Build a simple receiver to explore the wonders of the 60,000 meter band! ...... KG6EK 22 The QUAG-V - A high performance and wide bandwidth antenna for VHF and UHF ...... WB3AYW 36 Computerized Tuning for Ramsey Receiver Kits - It doesn't have to be expensive ...... N8KDD 42 Not Just Another Island - Weekend DXpedition activates the...
Topics: amateur, radio, mhz, antenna, frequency, ham, repeater, receiver, amateur radio, radio today, power...
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73 Magazine November 1972 (#146) The Traveling Ham ...... G3ZCZ/W3 5 Solid State Power ...... W6EI 15 TTL SELCAL for RTTY ...... W9ZTK 20 An IC TRF Receiver ...... W6DNS 29 The Mark II Electronic Keyer ...... W6JJI Emergency Power for home QTH ...... WA8OIK 37 High Power Mobile ...... W9NTP 42 220 MHZ Front End Using FETS ...... K1CLL 45 Double Delta Antenna ...... W2EEY 52 FMP Review ...... Staff 57 A Simple Converter for Beginners ...... WA8OIK 59 The Third Hand... Tester ...... WB4MYL 65...
Topics: mhz, output, frequency, amateur, antenna, repeater, power, meter, circuit, input, amateur radio,...
73 Magazine (Amateur Radio Today)
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73 Magazine December 1982 (#267) The Hangman's 2-Meter Collinear - Make your tower do double duty. Drop this array from the top and get 6-dB gain ...... W1GV/4 10 Deep-Six Squelch Tails - Kerchunks take a dive with the addition of this audio delay ...... WA2NYE 14 Build Yourself A Paralyzed Beam - Go from east to west In less than a second with this 2-meter array. And put your rotator out to pasture ...... WB2WIK 24 Taming the 2-Meter Linear - It lives In the forest of spurious oscillations and...
Topics: antenna, mhz, frequency, amateur, power, radio, audio, receiver, rtty, magazine, power supply,...
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73 Magazine May 1982 (#260) Pacific Odyssey - the Kingman/Palmyra adventure ...... KB7NW 12 Top-Notch for Top Band - super antennas for 160 ...... N3BEK 26 The Fun-Amp - 20 Watts out ...... WA0RBR 32 The CCD Antenna Revisited - does it measure up on 40m? ...... W4ANL 40 Antenna-Raising: The Good-Neighbor Policy - sidestepping civil war ...... AK5Q/4 42 'Lite Receiver IV - part I: building it is a breeze ...... WA40SR, WA4CVP 48 TVRO Sound Decoders - Satellite Central, part VI ...... Gibson 58...
( 2 reviews )
Topics: antenna, amateur, mhz, radio, magazine, tor, power, frequency, pth, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine September 1990 (#360) Quick and Easy Field-Strength Meter - Home-brewing can be simple! ...... KM4KT 9 75 Meter 1/4-Wave Sloper Array - Confessions of a contester ...... WA3EKL 18 Alinco Service Survey - Alinco may be the best show in town ...... WB6NOA 20 Dummy loads for DC Supplies - Don't risk your rig! ...... VE1GM 22 Mobile Power Source Organizer - Easy 12 volt hookups for your mobile gear ...... AH2AR/8 24 End-Fed Copper Dipole - Why buy when you can build? ...... N8KDD 26...
Topics: radio, amateur, antenna, mhz, frequency, ham, power, amateur radio, feedback card, power supply,...
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73 Magazine April 1982 (#259) Watching the Weather - a cheap and easy conversion ...... KA9GDL 10 The Sinkhole That Ate Winter Park - hams vs. hole ...... KA4RUL 18 Operation Skywarn - tracking tornadoes with two meters ...... WB5ZAM 24 Measure Ohms with Your Calculator? - yes, and accurately, too! ...... Johnson 28 Scanning with the IC-280 ...... N7AAD 36 Detect Killer Tornadoes - use an ordinary TV set ...... K2VJ 50 TVRO Dish Selection Tactics - Satellite Central, part V ...... Gibson 54...
Topics: amateur, mhz, antenna, radio, power, kit, frequency, magazine, model, amateur radio, power supply,...
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73 Magazine May 1994 (#404) HI-PER Audio Filter - This project provides High-PERformance CW filtering ...... KC3ZQ 10 Speech Compression - Make a monster mike! ...... KB1UM 16 Fast Charger - Recharge NiCd and NiMH batteries in as little as 30 minutes ...... KN6PK 22 The Radar Gun Reality - Ham scientist testifies on electromagnetic radiation ...... K6UI 30 Improved QRP Keying Circuit - A slick fix for your little CW rig ...... KD1JV 58 The ICOM IC-2iA Micro HT - Meet the evershrinking HT .........
Topics: radio, mhz, amateur, antenna, power, ihe, ham, repeater, tor, amateur radio, radio today, ham...
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73 Magazine January 1994 (#400) Using the World's Most Accurate Frequency Standard, Part 1 - Building a receiver for WWVB ...... K9EUI 10 Micro IDer - An easy-to-build automatic Morse code station identifier ...... KA9SZW, Pointer 18 The "Hula Loop" - A stationary bidirectional hybrid three-element delta loop ...... NH6XK 30 The Quad Charger - A constant current NiCd charger ...... K4GOK 34 EASY-PC Printed Circuit Layout Software - Want to get into computer-aided design (CAD)? .........
Topics: radio, amateur, antenna, mhz, repeater, ham, power, frequency, amateur radio, radio today, power...
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73 Magazine January 1993 (#388) The Techno-Whizzy 1, Part II - Build a direct digital synthesis (DDS) transmitter ...... N9JZW 10 Programmable-Frequency Audio Generator - High accuracy with digital control ...... Redman 16 The SP-1 Transceiver - Build the HF "Spider" ...... WA8TXT 24 Twin Crystal Ladder Filters - Upper or lower sideband filters using inexpensive crystals ...... N2DCH 32 Handi-Beacon - Turn your tape recorder into a beacon controller ...... WB9YBM 38 The Down East...
Topics: radio, amateur, mhz, antenna, output, power, frequency, repeater, digital, amateur radio, radio...
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73 Magazine November 1983 (#278) Construct the Callsign Power Supply - KAIQZ put together aesthetics and electronics to produce a power supply that gives you more than good regulation ...... KA1QZ 10 The Magical Audio Filter - A variable frequency notch filter plus a peaking circuit will do wonders for your reception. And this project will almost build itself ...... W6QIF 14 Keyboard Your Way to Happiness - If happiness is perfect Morse, then this project is pure heaven. Special construction...
Topics: amateur, mhz, radio, antenna, tor, frequency, ihe, output, circuit, morse, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine September 1991 (#372) The Square Pancake Antenna - A 20-inch square marvel! ...... W2SMR 18 Indoor 10 Meter Beam - A 2-element "invisible" coaxial antenna ...... N9CAP Economical Mobile HF Antenna - Modify a Radio Shack CB antenna for the HF bands ...... AA6NG 26 DXDA Awards and Countries - The latest update, thanks to Bob Reed WB2DIN ...... Staff 30 Dual-Band Vertical - This one's for the 160 and 1750 meter bands ...... WD4PLI 38 The L-O-N-G Long-Wire - What is it like to...
Topics: antenna, radio, amateur, ham, island, amateur radio, meter, mhz, ham radio, radio today, feedback...
73 Magazine (Amateur Radio Today)
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73 Magazine November 1989 (#350) Sing for the unsung Heroes - Let's recognize our clubs selfless volunteers! ...... K5CVD 36 1989 Holiday Wish List - Some of the best values for holiday gifts ...... 73 Staff 60 FLAVORIG! - Have a Radio Shack Flavoradio? Turn it into a 80-meter CW transceiver! ...... KBlUM 12 The Bitchaser - Build this versatile piece of test equipment for digital circuitry ...... K4OND 18 Bargain Audio Frequency Meter - $10 and an easy evening of home-brew gets you this very...
Topics: radio, amateur, mhz, antenna, frequency, ham, amateur radio, feedback card, ham radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine February 1982 (#257) The Fun-Oscillator - a simple, goof-proof vfo for your QRP transmitter ...... WA0RBR 12 Build this Antennalyzer - you'll need a weekend ...... W1BG 16 Police Freqs for the TR-2400 - a sleepless night for the mod squad ...... N9AKX 26 Those Amazing Bobtails - the current-fed connection ...... W1XU 30 Shoot the Moon! - visual tracking for your EME array ...... W9CGI 34 CQ MARS de IC-2A - work new worlds ...... WD8JLW 46 The Father of FM - the tragic story of Major...
Topics: antenna, mhz, frequency, amateur, radio, signal, receiver, ham, magazine, amateur radio, toll free,...
73 Magazine (Amateur Radio Today)
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73 Magazine December 1993 (#399) Deluxe Communications Audio Board - Enhance your audio with this practical add-on ...... WD4PLI 10 Resolving 2 Meter/Cable TV Interference - A winning strategy for keeping the peace, and staying on the air! ...... NM8R 18 Five-Element T-Match VHF Yagi - Excellent performance characteristics on 2 meters ...... KA0NAN 28 Remote Tuned Active Antenna - Tune this easy amplified antenna without leaving your chair ...... W2IMB 32 Melt Your Way to Better Breadboards -...
Topics: radio, amateur, antenna, mhz, ihe, ham, frequency, repeater, audio, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
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73 Magazine September 1983 (#276) "10... 9... 8..." - Be ready when the Space Shuttle Columbia carries aloft the first astro-ham. Here's the best way to contact this historic DXpedition ...... WA6ITF 8 Join the Packet-Radio Revolution - Get error-free, high-speed communications -Packet radio's chief architect, WA7CXD, explains what it is and how it works ...... WA7GXD 16 Be a RTTY Rembrandt - Put that award-winning shine on your RTTY pix with these tips from a RTTY artist's sketchbook...
Topics: amateur, radio, rtty, ihe, antenna, mhz, tor, magazine, ham, amateur radio, power supply, toll...
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73 Magazine December 1998 (#459) Probing Auto Electronics - Help your neighbor identify his car's problem and be an electronic's hero! ...... W6WTU 10 Announcing the QRPeanut - Here's a compact QRP transmatch you can build for next to nothing ...... N5GZH 14 Keys to Better Operating - Yes, much of it is common sense ...... W6BNB 17 Electronic Bug Emulator - Put some personality back into your CW ...... W4LJD 27 Low-Voltage Detector - for a number of uses ...... W6WTU 31 George's XE-Ient...
Topics: radio, amateur, antenna, mhz, frequency, battery, icom, amateur radio, feedback card, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1978 (#208) The Go-first-Class Digital Tester - build this outstanding in-circuit logic monitor ...... W7BBX/4 24 The Unbeatable Base-Loaded Three-Element Rotary Vertical ...... W3KBM 22 Negative Numbers On A $9 Calculator ...... WB6IXT/7 32 Sideband Exposed! -the mysteries of SSB unveiled -why not understand it once and for all? ...... W2FEZ 34 IC Timer Review ...... W3HB 40 Forget Ohm's Law ...... Stanfield 46 Brew Up A Signal Generator ...... Staff 50 Reprogram Your...
Topics: output, frequency, mhz, power, kit, circuit, amateur, radio, receiver, input, power supply, amateur...
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73 Magazine July 1984 (#286) Shoot at Will - KK2Y's Dayton mandate was to capture things on film. He did it. Enjoy a slice of Hamvention ...... KK2Y 10 Secrets of Cordless Phones - Is privacy sacred and range not? Maybe some hands-on research can help you decide ...... Haas 20 Modern-Eyes the S-Meter - Here's how to de-strain your baby blues by adding a simple LED readout ...... Patterson 24 Let's Have More Hams - Part I: How to organize and run a Novice class ...... AD0K 26 Let's Have More...
Topics: amateur, mhz, radio, antenna, magazine, repeater, frequency, tor, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine July 1979 (#226) A Visit to Antenna Specialists - Wayne tours the test range ...... W2NSD/1 30 Secrets of Guyed Towers - put 'em up and keep 'em there ...... WB3BQO 34 Death-Defying PL Mod for the KDK 2015 - not for the squeamish ...... W8GQL 40 Feed-Horn Mounting Made Easy - solution to a pesky problem ...... WB8DQT 44 Antenna Tuning Joy Revisited - remember the Tektronix 190B? ...... W9CGI 48 Modern Solid-State Equipment Design: A Better Way - sorry, tube fans ...... W4RNL 52...
Topics: antenna, khz, mhz, amateur, meter, frequency, tower, radio, tion, amateur radio, power supply,...
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73 Magazine January 1982 (#256) Egad! A Nine-Tube Linear - results from the W7CSD test bed ...... W7CSD 12 Drama on Mt. McKinley - ice, snow, and amateur radio ...... W7KUF 18 The Simplex Autopatch - a telephone interface for everyone's two-meter rig! ...... WA7VZR 26 The Cheapskate - a checker for bargain diodes ...... K9QLL 30 Constant Current from a Voltage Regulator ...... WA4WDL 39 The Hesitator: A Windshield Wiper Control - a rainy day project ...... N4UH 40 TVRO Signal Source -...
Topics: amateur, mhz, antenna, frequency, radio, output, power, signal, satellite, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine November 1982 (#266) A Perfect "10" - Timer, counter, logic probe - 10 functions in all. That's the Multi-Board One and you can build it ...... WA2BHB 10 Remote Control Your IC-701 - Simpler than commercial controllers, this home-brew circuit nevertheless features push-button band changing and frequency selection scanning, and expanded coverage ...... N2GW 14 Automatic Beam Aimer - Here is the scoop on adding set-and-forget convenience to your rotator control. Works with...
Topics: antenna, output, circuit, mhz, voltage, audio, frequency, magazine, power, power supply, amateur...
73 Magazine (Amateur Radio Today)
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73 Magazine December 1981 (#255) Cold Comfort - an HT to the rescue at fifteen below ...... KA1D 12 Review: The Rex Bassett TLM-2 Mobile Mount - banish your fear of flying ...... KAlLR 18 Update Your CW Music Keyboard - play it again Sam ...... K5KL 20 Review: The Kenwood TR-7730 Transceiver - Let's get small ...... KA1LR 26 Joe Ham: The Consumer - do you fit the mold? ...... N6AVU 32 Bob Cooper: Profile of a Pioneer ...... N8RK 38 Satellite Channel Guide - part III ...... WESTSAT 44 Satellite...
Topics: antenna, mhz, amateur, frequency, radio, power, magazine, signal, satellite, amateur radio, power...
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73 Magazine September 1982 (#264) Micro Modem - a RTTY TU designed for computers ...... WA4CKQ 10 F1 for the Hot Water 101 -all the way with FSK! ...... K0JH 20 No-Frills RTTY - $2OO and you're on the air ...... WA4STO 24 Incredibly Simple RTTY - receive it on your TRS-40 ...... WQXI 28 The RTTY/Tri-bander Marriage - enjoy the 100% duty cycle ...... K0ARC 32 Confessions of a Counter Evolutionary - part II ...... WAZFPT 38 Double Trouble 0n 50 MHz - Home-Brew Contest runner-up ...... KL7CLK 58...
Topics: output, antenna, mhz, rtty, amateur, input, frequency, radio, magazine, power, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine February 1993 (#389) Fun at 10,000 MHz - Explore the wide open spaces of the 10 GHz microwave band ...... WB6NOA 10 The 23-Foot Indoor Antenna - Make an effective 20 and 80 meter apartment-owner antenna ...... G2BZQ 16 Accurate Low Cost VSWR Meter - Convert this CB accessory for 1.8-450 MHz operation ...... AD5X 18 An Effective 160 Meter Antenna - How to build one on a small residential lot ...... KA6MMQ 20 The "Simplest Transverter" - Check out the 6 meter band with this...
Topics: radio, antenna, amateur, mhz, frequency, ham, meter, ghz, output, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
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73 Magazine March 1984 (#282) In Search of the Shuttle: Fun, Frustration, Fatigue - From Maine to Hawaii, our special correspondents gave W5LFL their best shots. Thank them ...... W5LFL 10 W5LFL report, Burbank, California ..... K6DUE 10 W5LFL Contacts ...... ARRL 11 W5LFL report, Saugus, California ...... WA61TF 12 W5LFL report, Westbrook, Maine ...... KlEFZ 14 W5LFL report, Nashua, New Hampshire ...... WB1BRE 16 W5LFL report, Lansing, New York ...... KO2X 20 W5LFL report, Jacksonville,...
Topics: amateur, radio, antenna, orbit, ham, led, mhz, ihe, repeater, amateur radio, morse code, ham radio,...
73 Magazine (Amateur Radio Today)
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73 Magazine December 1983 (#279) Code Practice: Have You Seen the Light? - This simple cpo is the best weekend project under the sun -or bulb ...... Davidson 10 Unlimited Guarantee for Power Supplies - Plan for the worst and you'll get the best, says KC0EW. He might be right ...... KC0EW 20 PC Boards in a Flash! - Make circuit boards without expensive equipment. All you need is a light and a fast switch hand ...... KA1FJR 28 "We've Been Boarded!" -When the Lorelei strayed into...
Topics: antenna, amateur, mhz, radio, ham, output, tor, magazine, power, frequency, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine May 1981 (#248) Two-Meter Antennas: Facts and Fables - the truth about omnidirectional antennas on two ...... W1IS 12 The 440-MHz Curtain - hang this broadbanded two-bay collinear on your tower and get 22 dBi to play with ...... WA9OZC 22 The Plumber's Parabolic Mount - a first-class hydraulic system ...... WD4MRJ, KA4JYD 28 The History of Ham Radio - part XIV ...... W9CI 36 The Skeptic's Multiband Ground Plane - This antenna flies in the face of accepted theory. Do you think it...
Topics: antenna, amateur, radio, mhz, frequency, magazine, antennas, tion, ham, amateur radio, radio club,...
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73 Magazine June 1966 (#69) The Micro-Ultimatic - 73 scoop: integrated circuits in a high-performance keyer ...... W1CFW 6 A Transistorized Scope - Another ham scoop: use transistors for deflection amplifiers ...... K8ERV 14 50 Watts on 50 MHz for $50 - This project should prove popular ...... K1CLL 18 Two Meter Transistor Converter - Cheap, simple and works well ...... W6AJF 24 220 MHz Transistor Converter - Grounded emitter or grounded base, too ...... W6AJF 30 432 MHz Transistor Converter -...
Topics: tlie, meter, receiver, frequency, power, antenna, output, crystal, volts, volt, power supply,...
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73 Magazine December 1992 (#387) The Techno-Whizzy 1, Part I - Build a direct digital synthesis (DDS) radio ...... N9JZW 8 The Key to Unlocking the HTX-100 - Improved RIT control ...... AC3L 20 Is 2 Meters Hazardous to Your Health? - How to calculate safety ...... N1II 28 Build a LiTZ Decoder - Touch-tone control your speaker for emergency alerts ...... KA5RZI, N7IOB 30 Iambic Keyer Paddles - A wide array of choices ...... N6HI 36 The Beach Brawley Boomer - QSOs made in the shade ...... NH6XK...
Topics: radio, amateur, mhz, paddle, ihe, antenna, frequency, ham, digital, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
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73 Magazine June 1982 (#261) Build This Digital Vfo - a microprocessor makes it simple ...... WA5VQK 12 Surviving the Unthinkable - part II : some practical ideas ...... AK0Q 30 A Split Personality for the KDK FM2015R ...... K0BV 40 Building for Beginners - happiness is a hot soldering iron ...... N1II 42 Coping with PC Boards - it's not easy to be virtuous ...... KC7M 48 'Lite Receiver IV - the second half ...... WA4CVP, WA4OSR 52 TVRO Transducer - waveguide-to-coax transition ...... WA4CVP,...
Topics: mhz, amateur, radio, antenna, frequency, kit, magazine, receiver, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1984 (#280) Breakthrough in Boston: The Birth of Crosslinking - Wl1UKZ built this box. It's small and it works. The question is whether you're ready for it ...... W1UKZ 10 Grenada Log - With a body-bag rig and gas from a bike, a ham hustled home the news. Here's history happening ...... K1XR, N8RK 20 Instant Pane Relief - This is the only notch filter for windows we've ever seen. If you can figure it out, you'll beat the feedline flu ...... KC8UD 22 Sound Off! - Here's the...
Topics: amateur, radio, antenna, mhz, tor, ihe, magazine, por, operator, amateur radio, power supply, radio...
73 Magazine (Amateur Radio Today)
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73 Magazine November 1980 (#242) VSWR... Automatically! - simplify antenna matching with this tune-up aid ...... WB0GWP 42 Welcome Back, Barry! - the Scottsdale RC's most famous member ...... K7NZA 52 Return to Shangri-la - a visit with 9N1MM ...... W1QMS 58 Direct Conversion lives! - excitingly simple receiver project ...... ZS6UP 64 Hams vs. Hurricane Allen - 73 aids St. Lucia relief efforts ...... N8RK 70 Tune In the Wind - a do-it-yourself hot-wire anemometer ...... VE7DKR 80 Direct...
Topics: mhz, antenna, frequency, power, magazine, amateur, radio, model, meter, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine February 1981 (#245) Winter Olympics Torch Run - a one-year perspective ...... KA2CNN/AAR2DE, KA2DBW 36 New Life for Old Klystrons - tips for microwave experimenters ...... WA4WDL 46 Add RTTY to Your Repeater - voice operation is preserved ...... WB4EMI 48 A Patch for the TS-120s - add phone patch compatibility ...... W5JJ 50 Successful Ham Classes - a guide for club organizers ...... WB1FOD 56 How FCC Rules Are Made - a labyrinthine tale ...... WD4DAZ 62 A $10 Phone Patch - CQ Ma...
Topics: mhz, frequency, antenna, amateur, power, repeater, magazine, radio, amateur radio, rtty, credit...
73 Magazine (Amateur Radio Today)
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73 Magazine August 1982 (#263) Poor Man's Spectrum Analyzer - another 73 breakthrough ...... WB5IPM 10 The AC4YN Story - a Tibetan adventure, circa 1936-1937 ...... G5YN 32 "Smart" Squelch for SSB ...... W9MKV, W9YAN 44 The Ultimate Fuse - ac overload protection ...... W2OLU 52 Multi-Purpose Peak Adapter - don't settle for being average ...... K9EUI 54 The $100 TVRO Receiver - Satellite Central, part VIII ...... Gibson 60 VUM: Volume Units Meter - makes measuring decibels easy .........
Topics: mhz, frequency, amateur, antenna, output, power, radio, voltage, input, meter, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine December 1986 (#315) Make The Switch - Add WARC to your rig's bands witch in a few hours—but you'd better get a pair of tweezers ...... WB2JJX 26 A VOX In A Box - This is the SSBer's answer to memory keyers -a tape-loop CQer! ...... K1NYK 34 Split That Audio! - Listen in on one of contesting's best-kept secrets—and add precious points to your next multi-single effort ...... K1NYK 38 Nobody Died - Three courageous amateurs battle the contesting masses on six and two ...... KT2B...
Topics: amateur, radio, antenna, mhz, ham, frequency, antennas, kenwood, hams, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine May 1985 (#296) Discover the Discone - Is this the perfect aerial? Consider simple wire constrcution, easy one-time tuning, and flat swr from 3.5 to 28 MHz ...... W1GV/4 17 Two for Two - We respectfully offer a pair of radiators for the two-meter band so elegant, yet so simple, that you will kick yourself for not thinking of them first ...... WA4BLC 22 The Snake with LED Eyes - A tall tale from the Antlers- wherethe decoration is strange and the stories are even stranger .........
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73 Magazine May 1965 (#56) 432 MHz Converter - Easy-to-build converter to get you on 70 cm ...... K6MIO 6 A New Approach to Phasing - Not all SSB transmitters use filters, you know ...... W8HXA 12 The Big Bomb - Runs a gentleman's gallon ...... W0SYK 18 Two for Two - Some antennas for our western hams ...... W6TKA 22 The Trouble with Fred - A fetching tale illustrated by K3SUK ...... Margolis 26 A Versatile Oscilloscope - Every ham needs a scope. This one does a lot, but doesn't cost it .........
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73 Magazine January 1988 (#328) Welcome, Newcomers! - Let's talk about it! ...... KA1HY 4 Working the World Fast - Heed this advice and you can't miss ...... N6HYK 11 W87PAX: DXing from the Pan American Games - A record-breaking success ...... KA9OIH 14 Troubleshooting Tricks #1 - The road to repair is easier than you think ...... Harshbarger 26 The Colvins - DXing is the life for Lloyd and Iris ...... N6HYK 28 DX with QSL Cards - Tips to improve returns ...... N8FU 31 A Case for DX Nets -...
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73 Magazine July 1994 (#406) The Global Positioning System - An overview ...... WA4BLC 10 World 's Smallest 10 GHz ATV Transmitter - Build one on a PCB using only a few components ...... HB9SLV, HB9RKR 16 EMI/RFI Defense Strategies for Hams - Keep those troublemaking signals out of your mobile installation ...... N7MGT 24 A Delayed Video Trigger for Your Oscilloscope - Convert your surplus scope ...... KC3XM 38 Muttiband Half-Wave Delta Loop (MHDL) - A simple 20-10 meter antenna with an SO-39...
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73 Magazine March 1977 (#198) Pitcairn Island ...... VR6TC 28 How Do You Use ICs? - Part VI ...... WA2SUT/NNN0ZVB 36 Low Voltage Power Supply ...... VE3CWY 38 QLF? Not With the Great Lakes Sideswiper! ...... W6VX 44 The Capacitor Comparator ...... WB4MYL 49 Logical Storage for Logic ...... Stanfield 50 CB Can Do Some Things Better ...... Norman 56 A New Breed of Voltage Regulators ...... WA7ABV 62 High-Quality Video Display ...... WABVNP 72 Save Time with a Micro OS ...... Ferguson, Ferguson 90...
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73 Magazine (Amateur Radio Today)
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73 Magazine December 1977 (#207) Inside Ten-Tec - QRP innovators ...... K4MDK 34 The History of Ham Radio - part V ...... W9CI 38 Try BCB DX! - when you're tired of twenty ...... WB2BJH 42 Build An Engine Analyzer - use your scope! ...... WA6THG/KH6 46 More Repeater Control Devices - control unit/audio interface ...... W7JSW 50 How Do You Use ICs? - part VIII ...... WA2SUT/NNN0ZVB 56 Finally! A Practical Discriminator! - metering system, that is ...... K4GOK 62 A Kilowatt Alternative - try a...
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73 Magazine December 1980 (#243) Who Really Invented Radio? - the twisted tale of Nathan B. Stubblefield ...... WB2NEL 36 In Search of the Elusive SES - track solar activity with this simple VLF receiver ...... WA3UER 42 An Even Better IC Timer - better than what? ...... WA0PBQ 46 Direct Printing FAX - Part II: constructing the facsimile recorder ...... WB8DQT 52 A 600-MHz Universal Counter - you'll freq out over this one ...... W4VGZ 58 Top-Banding the DX-60B - Part II: a companion vfo .........
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73 Magazine June 1981 (#249) Repeater at 102,000 Feet! - Canadian hams go up, up, and away ...... VE4FK 12 Digital Control for the Ham III Rotor - good-bye manual switching!...... WA0PBQ 18 Review: The Doppler Systems DDF-3003 - a review of the latest in direction-finding equipment from Doppler Systems ...... KA1LR 28 DF Breakthrough! - the "turkey" tracker we've all been waiting for ...... W7BEP 32 The History of Ham Radio - part XV ...... W9CI 48 Review: The VoCom Two-Meter Monkey -...
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73 Magazine (Amateur Radio Today)
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73 Magazine February 1977 (#197) Give That Professional Look to Your Home Brew Equipment - win prizes ...... McClellan 28 You Already Have an Atomic Frequency Standard - here's how to use it ...... WD8ASL 32 Give The Hamburglar Heart Failure - car alarm system ...... WA5KPG 36 Contest Special Keyer - has short but adequate memory ...... WA2KUO 38 The Chintzy 12 - a junk box wonder ...... W1OOP 40 You Can Sound Better With Speech Pre-emphasis - a simple circuit which will work wonders .........
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73 Magazine (Amateur Radio Today)
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73 Magazine May 1980 (#236) Home-Brew Rf Impedance Bridge - indispensable tool for antenna fans ...... WB6BIH 30 Rotary Beam for 10 or 15: the LB-2 - eliminates nasty matching problems ...... W6TYH 36 The 20-Meter Double Bobtail ...... W8HXR 44 Simple Switcher - a remote antenna switch with no control wires ...... WB5SFB 48 Taming the Monster Quad - a four-element blockbuster you can build ...... WA4JQS 50 For Cheapskates Only: A No-Frills Tilt-Over - requires a friend with a welding rig .........
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73 Magazine February 1983 (#269) Unleash the TS-900 - A rig like this deserves more room than 2meters can give. Get on HF (including WARC bands) with this transverter ...... W4BF 10 Four-Tone Audio Oscillator: A Potent Troubleshooter - For any test that requires a tone, this oscillator does the job It can also be computer-controlled ...... W7BBX 20 Superman's Repeater Control System - This simple system offers four independent on/off outputs. Just duck into any phone booth to use it ...... K3IJ...
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73 Magazine December 1972 (#147) AFSA IV SSTV Analyzer - Also works for RTTY ...... W0LMD 17 Single Conversion 2m FM - No 455 i-f needed - honest! ...... K1CLL 23 Miniature Tone Encoder - Fits inside the mike ...... WA9VGS 29 Tone Burst Decoder - For repeaters and such ...... W3JJU 33 Universal I-F Amplifier - Like for a 2m panoramic receiver ...... DJ1SK 38 Touch-Tone Connections - For repeaters ...... K3DSM 43 Simplest Audio IC Yet - Six parts and a battery! ...... W6YBP 49 Using Varactors -...
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73 Magazine April 1977 (#199) Shoot the Moon! ...... K3BPP 44 Frustrating The Thieves ...... WB0GGT 46 Automatic Autopatch Release ...... WA1RTD 52 Emergency 911 System ...... WA2RXQ 54 The Downspout Vertical ...... K8ANG 55 RTTY? What's That? ...... WA6CPP/WA7PEI 56 Do-It-Yourself Photosensitizing ...... KL7AE 57 Making Your Own PC Boards -Part II ...... Smith 58 Curing Mobile Noise Miseries ...... G3BID 64 An Intelligent RTTY Station ...... K7YZZ 72 Interrupts Explained! ...... ZL1TRM 76 CW...
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73 Magazine April 1981 (#247) The History of Ham Radio - part XIII ...... W9CI 46 Build a Frequency Counter -That TALKS! - state-of-the-art for blind hams ...... WA0OHO 52 In the Stack - R/Cers, don't be grounded by control channel congestion! Put your ship on six! ...... WB3BQO 56 All the News that Fits - make your club newspaper a winner! ...... N9YL 60 My Infernal Tower - tales of aflying fiasco ...... KC7M 64 Apples: Five Bits or Eight - Tired of "Space Invaders"? Then turn your...
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73 Magazine August 1979 (#227) You Can Watch Those Secret TV Channels - a complete MDS receiving system ...... K0JB, K0FQA 32 Simple Dual-Voltage Supply - power for many projects ...... W4VCZ 44 Bargain Zener Classifier - Novice project ...... WD8AAM 46 What the Hell is a Decibel? - 1/10 of a bel, of course ...... WA5EBB 48 Frosting for the FT-901DM - simple improvements for Yaesu's superb performer ...... K4TWJ 50 Mods for the Mark - desirable extras for your Wilson HT ...... K9EID 52 The...
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73 Magazine January 1991 (#364) High Precision Frequency Standard - Use your TV set as a laboratory standard ...... Johnson 9 Scrounger's Guide to Recycled Electronics - Discover a gold mine of inexpensive parts ...... W5FG 22 An HF/VHF/UHF Marker Generator - Get on frequency for less than $10 ...... K84ZGC 27 A Parallel Port I/O Board - Control your world! ...... VE6BGL 29 The Three-Terminal Regulator - Multiple uses in one package ...... N9RF 40 Rose Parade Mobile - A high-tech HF remote...
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73 Magazine July 1964 (#46) The 432'er: Outboard RF Stage ...... K1CLL 8 The 432'er: RF Amplifier ...... K1CLL 10 The 432'er: Tuned Trough Line Mixer ...... K1CLL 14 The 432'er: Local Oscillator Chain ...... K1CLL 16 The 432'er: First Evening of Listening on 432 ...... K1CLL 20 The BH-2 ...... K5JKX 22 2300 MHz Wavemeter ...... K7YJF 26 VHF Tunable Oscillators ...... K0CZD 36 Six Meter VFO ...... WA6CDO 42 VHF Yagis from TV Antennas ...... W6TKA 44 Semiconductor Schmaltz ..... Kidder 50 The...
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73 Magazine December 1968 (#99) Using the First Ham Integrated Circuit - Includes several useful circuits ...... W6DNS 6 Mouse Tunnels - Hiding the wiring ...... K6HKB 12 Circular Modulation Monitor - A new scope ...... WA9IGU 14 The Mini-Square - Square wave in miniature ...... WB6BIH 16 Add-On FM Test Set - Simple to complex in easy stages ...... K9STH 18 The Elusive H Parameter - Not so elusive now ...... WB6BIH 20 Zero Temperature Coefficient VFO - Sure stability ...... W6WQC 24 75 Meter...
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73 Magazine September 1973 (#156) 73 Visits Jordan - Wayne smuggles in the dynamite Mideast dope ...... W2NSD/l 12 JY Amateur Listing - A pre-callbook item ...... JYl 26 Repeater Logic System - Another Step toward the sentient repeater ...... WA1OMS 27 Single Band Log Periodic Antennas, Part II - Assembly details, installing trees etc ...... W4AEO 37 2m Calibrator and Alignment Aid - Handy if you've built a tune able adaptor for y our FM rig ...... K1CLL 43 How to PLL - Look where you're going...
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73 Magazine December 1970 (#123) Solid State Exciters - For the build-don't-buy crowd ...... W6YUY 16 Solid State Control for SSB Exciters - For really smooth tuning ...... W4NVK 28 Hams Are A Funny Bunch of People - Except me and thee ...... K3KMO 31 A 2 Meter Minitransmitter - Hand portable for FM repeaters ...... WB6BIH 32 Receiver Offset Tuning for the HW100 - For tuning in old timers who can't stay on frequency ...... WAZEAW 39 The Little Gate Dipper - 1.7 - 225 MHz GDO with no G .........
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73 Magazine August 1984 (#287) Top-Notch Tuner Time - Can't get your signal out of the backyard? Build KC2NT's antenna matcher and hear what you've been missing ...... K2NT 8 Cheap Power Ploy - This rugged supply will give you more power than you ever dreamed possible. Have we gone too far this time? ...... K9QLL 10 Penn's Two-Tone Gadget - Clue one: We're talking about lab quality. Clue two: Get your junk box ...... W1BG 21 Yaesu, Icom Graft Revealed - Splice Icom's headset to Yaesu's talkie...
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73 Magazine December 1976 (#194) Go Tone for Ten - simple subaudible encoder ...... WB6GON 22 World's Simplest Five-Band Receiver? - using an AM transistor radio ...... K3QKO 28 How Do You Use ICs? - part IV ...... WA2SUT/NNN0ZVB 36 Hamming 101 - another Cabrillo College pioneering program ...... Inman 40 A Super Cheapo CW IDer - for FM repeaters and RTTY ...... K4EEU 46 The ZF Special Antenna - double-D "beam" ...... ZF1MA 51 CT7001 Clockbuster - the ultimate clock / calendar (for...
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73 Magazine December 1995 (#423) A Portable Integrated 20 Meter SSB/CW QRP Ham Radio Station - A ten pound powerhouse ...... KB4ZGC 10 Nostalgia For The Future - High performance crystal radio utilizes a high-efficiency JFET detector and dual resonant circuits for superior performance ...... KC3ZQ 14 A Perspirational Message ...... W2NSD/1 17 Jan Mayen - A Special DXCC Country ...... AJ0N/LA6US 18 Key It! ...... KB1UM 26 A Milliohm Adapter For Your DMM - Expand your meter sensitivity .........
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73 Magazine July 1981 (#250) Dayton Dilemma '81 - which new gear do you buy? ...... KA1LR 22 The Fun-Ceiver - easy-to-build companion to February's QRP Fun-Mitter ...... WA0RBR 32 Review: The Kenwood TS-130s - a good rig done better ...... KA1LR 38 Review: The NCG-15 SSB/CW Monoband Transceiver - moving tale of mobile hamming ...... KA1LR 42 The Incredible Shrinking Antenna - give your vertical a top hat ...... W1GV/4 44 Review: The Micro Control Specialties Mark 3CR - a hassle-free repeater...
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73 Magazine October 1986 (#313) Just the FAX, Ma'am - Check out NOAA's eyes in the sky with this one-chip weather FAX decoder for your C-64 ...... WB8TPD 24 Make the Switch to PIN Diodes - Unbelievably fast, PIN diodes can drag your tube-bound transceiver into the 80s with silent switching ...... OA4KO/YV5 28 Shoestring Shortwave - Remember when rigs were built on pine bases? Try KICLL's converter for old time's sake ...... K1CLL 34 The End of the Rope - Some days you just want to mail your...
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73 Magazine April 1987 (#319) Dayton Digest - If you haven't been to the Dayton Hamvention, you haven't been to a hamfest ...... WA4BPI 32 QRP Antenna Farming - Work the world from a small lot with a few Watts ...... W0VM 36 The Cellular Phony Antenna - A two-meter mobile antenna with a twist ...... WA2AJQ 38 Weatherproofed Antennas - Stop ripping apart your antennas every year in the name of "maintenance" ...... KD5UJ 40 Tube Terror - "Before you can leave, you must find an...
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73 Magazine (Amateur Radio Today)
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73 Magazine (Holiday Issue 1976) (#195) Build This Inexpensive 400 Watt Amplifier - a pair of shoes never hurts W7SCD How Do You Use ICs? - part V WA2SUT/ NNN0ZVB Mobile Smokey Detector - 10.5 GHz:use it or lose it W1SNN Get a Kid Off the Streets - and in to ham radio WA1GFJ Add RIT to Your Transceiver - a must for CW operators Staff Coronaries for Burglars - with this cheapo car alarm WB60DS Power Supply - versatile WB4EHG DXpedition : Memories for a Lifetime - reflections of HKITL K3JJZ...
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73 Magazine March 1982 (#258) The Porta-Peater The Instant Communicator - quick and easy does it ...... WA2BHB, AC2A, WA2UNN 12 Amateur Television's Stripper - a home-brew star ...... VE3CYC 20 Polishing Kenwood's R-1000 - a gem in the rough ...... K9EUI 34 Peaking and Tweaking Surplus CB Boards - the untold story ...... WB0NPN/8 38 OSCAR Pathfinder - a colorful way to track the satellites ...... WB6NQK 46 Which TVRO Antenna Is Best? - Satellite Central, Part IV ...... Gibson 52 Home-Brew a...
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73 Magazine September 1977 (#204) A FAAR-OUT DXpedition ...... WA6YOB 25 So You Want to Get Into RTTY? ...... W9IF 28 Design An Active RTTY Filter ...... K2OAW 38 Moving Display RTTY Readout ...... WB8SWH 44 RTTY SWling ...... WA2MOT/WT2AAG 52 RTTY Local Loop ...... WB5IRY 59 Try the RTTY Reader ...... W3JJU, Cannon 60 Organize Your RTTY Pix ...... W2PSU 66 Build A RTTY Message Generator ...... WB9CNE 74 FSK for the Drake ...... WB8DMC 78 Baudot to ASCII Converter ...... VE4CM 80 Digital Group...
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73 Magazine January 1980 (#232) NBVM: Dawn of an Era or Promotional Hype? - the performance and politics of Narrow Band Voice Modulation ...... N8RK 30 Frequency Counter Survival Course - use that gadget wisely ...... McClellan 36 DX with a Difference: the Utility Stations - when the ham bands get frustrating, give SWLing a try ...... WA3EOP 40 How to Write a RTTY Program - machine language is easier than you think ...... WA4FMZ 46 The Perfect Morse Machine - send and receive CW with a...
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73 Magazine May 1984 (#284) From Base to Beams - Home-brew from the ground up - Here's how to build a tower and top it off with performance-proven antennas ...... W6TYH 10 A Little Gem for QRP - The T2FD antenna thinks it's a full-size rhombic. Feeding is believing ...... W8VFT 26 "The Tops of the Palm Trees" - 20,000 QSOs. Coral Sea. Banyandah ...... VK2BJL 28 How to Gain with PVC - This could be history's cheapest quad. Try water pipe on 2m ...... WB6BHI 37 Helicoids - Few people...
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73 Magazine September 1994 (#408) Compact 160 Meter Transmitting Loop Antenna - You don't need to move to a new QTH! ...... G2BZQ 10 The Discriminator - A directional receiving antenna for hams and SWLs ...... G2BZO 16 Low-Cost Transmission Lines - What you don't know can cost you ...... K5DKZ 22 The Challenge of 1750 Meters - No license required ...... WD4PLI/6 36 The HOFI Antenna Switch - Quality at every turn ...... WA4BLC 24 Computer Automation Technology's CAT 1000 and CAT 300 Repeater...
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73 Magazine November 1984 (#290) Color Computer SSTV: Part I - Turn your CoCo into a complete SSTV terminal How? First, build this high resolution display system ...... K6AEP, WB8DQT 10 Wrap Up TVI! - Can you endure another evening without transmitting? Use this simple cure to choke out television interference forever ...... KR7L 26 But I Know How To Solder! - Anyone can dribble hot metal over a joint, bit it takes an artist to really solder. Are you a Picasso or a pig? ...... WD4S 28 Free-Form...
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73 Magazine June 1994 (#405) MRP4 Solar Panel Control Circuit - Build this easy charge controller for your sun-powered station! ...... WB8VGE 10 Surplus Solar: Is It for You? - An affordable alternate backup power system ...... N7MGT 18 Used Batteries for Ham Stations - Another way to save money on power systems ...... N7MGT 22 All About Those Lightweight HF Ham Whips - Easy mobile operating from 160 to 10 ...... WB6NOA 28 Mobile-ON Alarm Timer - This little circuit could save your car's...
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